US2968616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting scale formation by non-hydrolyzing organopolysiloxane
Assignee: Pure Oil Co
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Filing: 1955-11-17
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Granted: 1961-01-17
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Expires: 1975-11-17
Abstract
No abstract record available.
Inventors
- 👤 George G Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:20
CPC Classifications
F; F28; F28G; F28G9/00; C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; Y; Y10; Y10S; Y10S203/00; Y10S203/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE METHOD OF INHIBITING FORMATION OF SCALE ON A METALLIC SURFACE IN CONTACT WITH FREQUENT CHANGES OF HOT WATER CONTAINING CATIONS FROM THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM COMPRISING ADDING TO SAID WATER PRIOR TO CONTACT WITH SAID SURFACE BETWEEN 0.001 TO 1% BY WEIGHT OF A SUBSTANTIALLY NON-HYDROLYZING ORGANOPOLYSILOXANE RESIN OF THE FORMULA:
Claim 2
Independent Claim
55 words
THE METHOD OF INHIBITING FORMATION OF SCALE ON A METALLIC SURFACE IN CONTACT WITH FREQUENT CHANGES OF HOT WATER CONTAINING CATIONS FROM THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM COMPRISING ADDING TO SAID WATER PRIOR TO CONTACT WITH SAID SURFACE BETWEEN 0.001 TO 1% BY WEIGHT OF A SUBSTANTIALLY NON-HYDROLYZING ORGANOPOLYSILOXANE RESIN OF THE FORMULA:
References Cited (Backward Citations)
US2523281A
Cited
US997281A
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US2299748A
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US2375007A
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US2632736A
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US2587636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |